Many issues, such as, DO accumulation, N fixation obstacle, and carbon dioxide diffusion, hamper the application of microalgae-alginate immobilization in wastewater treatment. The objective of this study was to evaluate the effect of the microalgae immobilized with the bacterium in alginate on ammonium and phosphate removal from synthetic wastewater. Results show that the co-immobilized can exploit ammonium and phosphate from wastewater more effectively than the immobilized , and immobilized alone. A significantly higher ammonium and phosphate removal efficiency was found in co-immobilized (59.85%, 90.44%) than of that in immobilized (49.56%, 77.36%), and immobilized (31.46%, 29.66%) alone. Additionally, the most effective co-immobilization mixture ratio for wastewater treatment was found to contain equal suspension (10 cell/ml) volume of the and . and can coexist harmoniously with the symbiotic and synergistic relationship, and the - combination can be useful as a potential method to develop novel wastewater treatment.
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Article Synopsis
- The anammox process is an efficient method for removing nitrogen from wastewater, but its application is limited due to slow bacteria growth and sludge flotation.
- This study explored two methods—Mg adsorption and magnesium ammonium phosphate (MAP) precipitation—to enhance anammox bacteria granulation, with Mg boosting specific anammox activity significantly more than MAP.
- While both methods showed similar nitrogen removal efficiency, MAP helped reduce sludge flotation, making it an effective option for practical applications despite some drawbacks in bacteria performance.
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